Combination-lock.



No. 769,146. PATENTED SEPT. 6, 1904 w. H; BRIGHT. v COMBINATION LOOK.

I APPLICATION FILED 0GT.10, 1903.

HO MODEL. ZSHEBTS-SHEET 1.

- HHHHMWWM- PATENTED SEPT.-6, 1904. I

I No. 769,146. I

W. H. BRIGHT.

COMBINATION LOOK.

APPLIGA'UON FILED OCT. 10, 1903. K0 MODEL. 2 SHEETS-SHEET 2.

. I i- I I| HHWHHH" .5 19 1 UNITED Y ST TE Patented September '6, 1904.

PATENT OFFICE.

WILLIAM H. BRIGHT, onoANoNsB Re, PENNSYLVANIA.-

COMBINATIONE-LOCK.

srncrrion'rron formingpart of Letters eat n. No. 769,146, dated September 6, 1904.

Application filed October 10, 1906.

To all whom it may concern:

Be it known that I, WILLIAM H. BRIGHT, a citizen of the United States, residing atCanonsburg, in the county of Washington and State of Pennsylvania, have invented a new and useful Combination-Lock, of which the following is. a specification.

This invention relates to combination-locks,

and has for its object to provide a simple and inexpensive combination-lock adapted for use in securing drawers, safes, or doors, in which the parts are so arranged that the operation of the lock is positive and effective, and in which the combination by means of which the bolt may be withdrawn, so that the drawer or door may be opened, can be quicklychanged without disarranging the lock mechanism or exposing the parts within the lock-casing.

elevation of a portion of the exposed end of a drawer having the lock applied thereto.

' Fig. 2 is a vertical section through the end of broken away to show the. internal construction of the lock. Fig. 5 is a transverse section on the line 5 5 of Fig. 4. Fig. 6 is a detail view in elevation of the knob by which the lock shown in Figs. 4 and 5 isoperated and the scale by means of which the movements of the knob are determined.

In thedrawings, in which corresponding parts are designated by similar characters of reference, 1 designates the front end of a drawer upon which the lock is'secured, and 2 Serial Nb. 176,546. (No meter.)

designates the member upon which thekeeper 2 is mounted for engagement by the bolt.

The lock-casing 3, which is preferably rectangular in form, as shown, and will ordinarily be made ofsheet metal, is secured upon the drawer-front 1 'by-being set into a recess on the rear surface of the drawer-front in the usual manner.

Within the casing 1 there are provided at the'top blocks 4 and 5, which are spaced apart, as shown, to form a boltway 6 and are channeled, as shown at 7, on the under surface to form. guides for the slides 8, 9, and 10, which rest-in channels 11, 12, and 13, respectively, formed in blocks 14, whichare. secured in the bottom of the casing and spaced apart to provide room for a small pinion 15, which is mounted on a shaft 16, which extends transversely through the casing andprojects beyond the front surface of theend piece 1 of the drawer. The slide 8 is provided on the bottom with a plurality of teeth 17 forming a rack for engagement withthe pinion 15, while the slides 9 and 10 are somewhat narrower and are smooth on the under side, so as to move easily in the channels 12 and 13, provided therefor. This slide 9 has-arranged about midway between its ends a small block 18, which projects slightly beyond each'face of the slide and plays in slots 19 and 20 in the slides 8 and .10, respectively. The bolt 21, which moves in the boltway 6, consists of a rectangular block provided on the under side with a downwardly-projecting lug 22, which is beveled at two of its lower corners to present inclined surfaces 23. The bolt 21.is transversely channeled at 24 to afiord a seat for a'small leafspring 25, whose ends are fitted with recesses 26 in the blocks 4, and which acts to aid gravitation in depressing the bolt 21. ness of the bolt 21 is such that it overlies the slides 8, 9, and 10, and the projection 22 at the bottom of the bolt is adapted to engage with aV-shaped, notch 27 in the slide 8 and square notches 28 and 29 in the slides 9 and 10. When the bolt is in engagement with the notches, it will be .depressedby means of the spring 25, and the square corners of' the The thickwhile the inclines 23 will engage with the sides of the V-shaped notch 27.

In order to operate the lock, the shaft 16 is threaded on its forward end and bears a knob 30, provided with an index-finger 31, which moves over a circular plate 32, provided with a plurality of radial graduations forming a scale with as many subdivisions as are desired. The knob 30 is formed with a cavity 33 on its forward surface, and in order to hold the knob in firm engagement with the shaft 16 and prevent turning thereon a jam-nut 34: is

mounted on the shaft external to the knob 30 and has a conical face engaging the cavity 33. When it is desired to retract the bolt in order to open the drawer, the knob 30 must be turned in one direction until the notch 29 in the plate 10 is brought beneath the lug 22 on the bolt. This position of the notch 29 will of course be indicated by the registration of the index-finger 31, with a predetermined graduation upon a scale on the plate 32. The notch 29 having been brought beneath the lug 22, the knob will be turned in the opposite direction, and the pinion engaging the rack on the bottom of plate 8 will-move that plate in the opposite direction until the end of the slot 19 is brought into contact with the side of the member 18, and then movement will also be imparted to the slide 9, which must be continued until the notch 28 is brought beneath the bolt. Then the direction of movement of the knob will again be reversed and the slide 8 moved until the V-shaped notch 27 is brought under the bolt also. The bolt will then descend into the notches under the combined action of gravity and the elasticity of the spring and the drawer may be opened. When it is desired to fasten the lock, the drawer will be closed and the knob turned in either direction sufficiently to move the slide 8 out of its position. The inclined sides of the notch 27 acting upon the inclines 23 on the lugs 22 at the bottom of the bolt will force the bolt upward and will permit the slides 28 and 29 to be shifted so that the notches 28 and 29are no longer in position to receive the projection 22.

In Figs. 4, 5, and 6 the lock-casing 3 is shown as mounted within the casing 40 of a doorlatch, having a bolt 41, which is retracted by means of knobs 12 of the usual type. The latch 11 is provided on its under side with a recess 43 large enough to receive the bolt 21, and the portion of the lock when used in connection with the latch is substantially the same as when used upon the drawer, as already described. The latch 4L1 will be normally held in such position that the recess 43 may be entered by the bolt 21, and when it is desired to advance or retract the bolt 21 the procedure will be precisely the same as when the lock is applied to adrawer. 1n the modified form of the invention the shaft 16 is replaced by a longer shaft 16, which extends entirely through the door and is threaded at both ends to be engaged by knobs 30 for operating the lock.

In both forms of embodiment of the invention the change of the combination by means of which the lock is unfastened may be instantly accomplished by merely loosening the nut 3 1 and turning the knob 30 upon the shaft 16 or 16, as the case may be, and the screwing the nut into clamping engagement with the knob.

From the foregoing description and the drawings illustrative thereof it will be seen that the construction of my improved lock is extremely simple, that it may be readily operated both for locking and unlocking, and that the combination may be changed as often and as quickly as may be desired.

While the invention has been described as embodied in a lock having three slides, it is evident that the number of slides may be greatly increased, if desired, and for a simpler lock one of the slides may be omitted.

Other changes may be made in the details of construction without departing from the spirit of the invention or sacrificing its :ulvantages.

Having thus described the construction and operation of my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination in a lock, of a casing, a bolt mounted for reciprocation within the easing, a plurality of slides mounted for reciprocation at right angles to the movement of the bolt, each of said slides having a notch on the side nearest the bolt, the notches in all but one of said slides being square and the notch in the remaining slide being V-shaped, a ing on said bolt presenting square corners for engagement with the square notches in the slides and presenting inclines for engagement with the V-shaped notch in one of said slides, and means comprising a knob and an index movable over a scale for separately moving said slides into position for the notches therein to receive the lug on the bolt.

2. The combination in a lock, of a casing, a bolt arranged for reciprocation in said casing and having a transverse channel forming a seat for a spring, a spring secured in said channel and operative to keep said bolt normally retracted, a plurality of notched slides beneath said bolt one of said slides having a notch with inclined sides whereby said bolt may be advanced, and means for illilliltltillg movement to said. slides to bring the notches thereon into registration to receive the bolt and to move said slides out of said position to advance the bolt.

3. The combination in a lock, of a casing, a spring pressed latch arranged for sliding movement in said casing and having a recess in one side thereof, a bolt arranged for sliding movement at right angles to the line of movement of said latch, and adapted to enterthe recess in the latch, means for keeping the bolt normally disengaged from the-recess, and means for throwing said bolt into engagement with said notch when desired.

4. The combination in a lock, of a casing, a

- latch arranged for sliding movement therein,

a locking-bolt adapted to engage with said latch, said locking-bolt being held normally out of engagement with said latch, and a plurality of slides arranged adjacent to the said WILLIAM H. BRIGHT.

Witnesses:

J. V. H. COOK, A. P. HULL. 

